Automatic installation of subway security and fire alarm

1. General provisions

The project is implemented in compliance with the existing norms and rules and ensures explosion and fire safety of the plant operation in compliance with the measures stipulated by the project. The project was developed on the basis of agreement No. 9342 for the design of an automatic security alarm installation concluded with OJSC Minskmetroproekt.

The initial data for the design were the drawings provided by the Customer, the technical specification for the design and the main technical solutions for the security alarm of the facility.

When developing the project, the requirements of the following regulatory and technical documents were taken into account :

SNB 1.03.0396 - "Composition, procedure for development and approval of design documentation in construction";

GOST 21.10193 - "Design Documentation System for Construction. Basic requirements to detailed documentation ";

SNiP 3.05.0685 - "Electrical devices";

PUE - "Electrical Installation Rules," sixth edition;

GOST 30331.395 (IEC 36444192) "Electrical installations of buildings. Part 4. Safety requirements. Protection against electric shock. "

RD 2595390 "Automatic fire extinguishing, fire, security and fire alarm systems. Symbols and schematic graphics. "

RD 28/3.0082001 "Technical facilities and security systems. Procedure for Development of Engineering Specification. "

RD 28/3.0092001 "Technical facilities and security systems. Symbols and schematic graphical elements of systems. "

RD 28/3.0102001 "Equipment and security systems. Security alarm systems. Composition, procedure for development, approval and approval of design documentation. "

Description and characteristics of the object

Automatic installation of security alarms is equipped with the station. Borisov tract of the Minsk metro.:

All protected spaces have capital walls.

Key Technical Solutions

The type of alarm sensors is determined depending on the design of doors and windows, as well as the category of fire hazard, temperature and humidity of the protected rooms .

Premises are protected by volume by AVANTBRAVO sensor. The FG715 sensor is used to break the glass. The MPS5 sensor is used to open windows and check doors.

Plug-in contacts of sensors to the round-the-clock area of Signal 20P SMD control and receiving device.

The interconnected detectors form loops, which are connected to the SMD Signal 20P device and output to the PCP. Monitoring of alarm loops condition is provided to SMD 20P signals. Information on all events which are taking place in installation of the alarm system are fixed by the equipment in real time and also blocks of indication S2000BI are displayed on the C2000 remote controller. In case of equipment malfunction, light and sound alarms are provided.

In the normal state, in the "test" mode, the control current flows through the OS loops. If the interlock is broken (door opening, glass breaking, etc.), the loop is de-energized and the device records the "alarm" signal transmitted to the PCP.

Setting of the device to "Security" mode and disabling of this mode is performed by electronic key (touchmemory) using access device installed at police station in lobby 1.

Installation of equipment and electrical wiring

Security alarm sensors are installed on protected structures (windows, doors), according to departmental regulatory documents and in accordance with their technical characteristics. Signal 20P SMD.- install in according to drawings, on the wall at a height of 1,8 m. from the floor level. Install the boxes at a height of 2.2m.

Wiring of the security alarm network is performed by 8x0.5 KSPV cable along the walls in the duct. Power supply of security alarm devices is performed by the Customer according to the task of BelPKI "Special Automation." The routes between the vestibules are made with armored cables of the CVWB.

Power supply and grounding of equipment

The security alarm unit belongs to the 1st category of power supply. The main (working) food 220B, 50 Hz for A606 devices and A6042sht. - performed by the Customer. Reserve food is carried out from batteries 12B, 7 of Ach for A604 and A606 devices of the devices installed in cases and 12B, 12ach for the power supply of SP VZ. Accumulator capacity provides operation of alarm equipment for at least 24 hours in standby mode and for at least 3 hours in "Alarm" mode.

Calculation of capacity of the accumulator for the power supply of SP VZ2 (food of security announcers):

Calculation of battery capacity for VZ1 IP power supply (instrument power supply):

To protect maintenance personnel from dangerous voltages that may occur on electrical equipment housings as a result of insulation damage, grounding of electrical equipment housings is provided. Grounding of electrical equipment is performed by metal connection of its housings to the neutral of the power supply network of objects, for which a separate third, protective conductor, laid together with wires of other purposes, is used. During works, refer to GOST30331.395 (IEC 36444192) "Electrical installations of buildings. Part 4. Safety requirements. Protection against electric shock. "

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